Treatment by Coagulation-Flocculation of Dairy Wastewater with the Residual Lime of National Algerian Industrial Gases Company (NIGC-Annaba)
| Autor: | Riad Ayeche |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
Suspended solids Flocculation Waste management Calcium carbide engineering.material coagulation-flocculation Industrial waste chemistry.chemical_compound Energy(all) chemistry Wastewater engineering pollution Environmental science Water treatment Organic matter lime organic matter treatment of the dairy wastewater Lime |
| Zdroj: | Energy Procedia. 18:147-156 |
| ISSN: | 1876-6102 |
| DOI: | 10.1016/j.egypro.2012.05.026 |
| Popis: | The process used, at the National Industrial Gases Company N.I.G.C. Annaba (Algeria) for the manufacture of acetylene consists of reacting the calcium carbide with the water in excess. Such a process necessarily leads to the parallel production of lime slurries in the form of sludge. The amount of this by-product, considered as industrial waste, increasing from one day to another. This residue, with no commercial value, poses landfill or long-term storage problems. This rejection, highly alkaline, has led to disasters affecting the soil, water, wildlife, plants and even animals. These observations led us to valorize this by-product in protecting the environment, especially in water treatment. The generalization of the use of this by-product in water treatment would provide a very large market and allow simultaneous dual action favorable to the environment: the elimination of waste and water treatment. The main objective of this study is to devaluate the performances of the residual lime, by-product of the manufacture of acetylene, up to level of removal of suspended solids and removal of organic matter from the wastewater of the dairy “EDOUGH”. The tests of process showed that the coagulant used would reduce: the suspended solids (LSS), organic matter, nitrogenous and phosphated compounds, with an abatement of 92% of LSS and 83% of PT, which guarantees the respect Algerian standards for these two parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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